Hydraulic drive directional sidetracking borehole tool

Abstract

The invention belongs to a drilling operation tool, and particularly relates to a hydraulic drive directional sidetracking borehole tool. The hydraulic drive directional sidetracking borehole tool is mainly composed of an inclination guiding short section, a transmission short section, a valve set short section, an oil tank short section, an anchoring short section and a battery short section. The working position of the sidetracking borehole drilling tool is determined by the working position of the deflection guiding short section. A pressure signal preloaded with the working position of the deflection guide short section can be released from a wellhead, and the working position of the deflection guide short section is adjusted by controlling an electric device through a control circuit in the hydraulic drive directional sidetrack drilling hole tool, so that a drilling tool group is positioned in a specified working direction, and the sidetrack drilling direction of a drilling tool is controlled. The sidetrack drilling direction of the drilling tool can be adjusted according to actual requirements, the applicability of the radial well technology and the reservoir drilling rate are improved, and the sidetrack drilling time and cost are saved.

Description

Technical Field

[0001] The invention relates to an operating tool for oil drilling operation, in particular to a liquid-driven directional side-drilling wellbore tool, belonging to the field of drilling operating tools. Background Art

[0002] Radial horizontal well technology can effectively penetrate mud contaminated zones, multiply the oil leakage area, and increase the production of single oil and gas wells. It is an effective means for the transformation of old wells in oil fields, reservoir potential tapping, and stable production and increase. At present, radial horizontal well side drilling mainly uses tools such as whipstock and diverter to side drill the original wellbore at a certain preset angle. When using traditional whipstock, it is often only possible to side drill a radial horizontal wellbore in a certain horizontal layer. At the same time, the whipstock will be abandoned in the well without recovery after completing the side drilling operation, resulting in a waste of resources and blocking the original wellbore. In order to improve the reservoir drilling rate and oil production efficiency of radial horizontal well technology and save the cost of tool use, we have developed a liquid-driven directional side drilling wellbore tool that can not only meet the working requirements of side drilling wellbore, but also can side drill multiple side wellbores within a 360° circumference of a specified layer in the oil well to improve the reservoir drilling rate; and it can be recycled and reused repeatedly to achieve the joint exploitation of new and old wellbores. Therefore, the invention of a liquid-driven directional side-drilling wellbore tool is of great significance for improving the drilling rate of oil reservoirs, the utilization rate of old wells and the increase of oil well production. At the same time, it provides a new theoretical and technical support for the progress and promotion and application of multiple system related technologies such as radial wells, small wellbore side-drilling, and flexible drilling tools side-drilling. Summary of the invention

[0003] The purpose of the present invention is to solve the above problems and to provide a liquid-driven directional sidetracking wellbore tool which can adjust the drilling position of the drilling tool according to actual needs, has simple recovery and reasonable structure.

[0004] The technical solution adopted by the present invention is:

[0005] A liquid-driven directional sidetracking wellbore tool, characterized in that: the working position of the sidetracking wellbore drilling tool is adjusted by the working position of the guide short section, so the key to directional sidetracking is to control the working position of the guide short section; the liquid-driven directional sidetracking wellbore tool adopts a closed oil circuit inside to control and adjust the working position of the guide short section by hydraulic drive;

[0006] The said guide short section comprises a guide body, a guide anchor claw, a spring, an anchor claw pressure strip, and a guide oil chamber cover. The lower part of the guide body is connected to a slewing bearing, and the relative rotation of the guide short section and the transmission short section is realized through the slewing bearing.

[0007] The outer circumference of the guide body is evenly provided with 4 anchor claw grooves and 4 key grooves. The anchor claw grooves are used to install springs and guide body anchor claws, and the key grooves are used to install anchor claw pressure strips. A hydraulic oil chamber is provided inside the guide body, and the hydraulic oil provides anchoring force for the guide body anchor claws. The bottom of the guide body is provided with an oil chamber cover connection threaded hole, a slewing bearing inner ring connection threaded hole, and a motor connection threaded hole, which are respectively connected to the guide body oil chamber cover, the slewing bearing inner ring, and the hydraulic rotary motor through mechanical screws;

[0008] The transmission assembly includes a transmission short section housing, a hydraulic rotary motor, and an oil passage block. The upper end of the transmission short section housing is connected to the outer ring of the slewing bearing, and the lower part of the transmission short section housing is connected to the valve group short section.

[0009] The transmission short section housing is provided with a slewing bearing outer ring connecting threaded hole, a sealing groove, a motor seat, a motor fixing through hole, and an oil block connecting through hole. The slewing bearing outer ring is connected to the top of the transmission short section by means of a machine screw through the slewing bearing outer ring connecting threaded hole. The motor seat is used to install a hydraulic rotary motor. The hydraulic rotary motor and the transmission short section housing are connected by means of a machine screw through the motor fixing through hole. The oil block and the transmission short section housing are connected by means of a machine screw through the oil block connecting through hole.

[0010] The valve group nipple includes a valve group nipple housing, a transmission-valve group nipple oil circuit rotating connection block, a reversing valve, a reversing valve bracket, a tool anchoring control valve, a guide bevel anchoring control valve, a valve group bracket, a diverter block, a pump bracket, a hydraulic pump, a drive motor, a motor bracket, and a valve group-oil tank nipple oil circuit rotating connection block;

[0011] The lower end of the valve group short section is connected to the upper end of the oil tank short section, the lower end of the oil tank short section is connected to the upper end of the anchor short section, and the lower end of the anchor short section is connected to the upper end of the battery short section;

[0012] The oil tank short section includes an oil tank, an oil tank cover, and a piston, wherein the piston divides the interior of the oil tank into a hydraulic oil chamber and a compressed gas chamber;

[0013] The anchoring nipple comprises an anchoring-tank nipple oil circuit swivel connection block and a hydraulic anchor;

[0014] The battery short section includes a battery short section housing, an electric signal control board, a pressure sensor and a battery.

[0015] A further technical solution is a liquid-driven directional side-drilling wellbore tool, which realizes the anchoring function of the entire tool and the rotation and anchoring function of the guide angle short section through an internal closed oil circuit. The hydraulic oil pump drives the hydraulic oil into the oil circuit. The hydraulic oil passes through the tool anchoring control valve and the guide angle anchoring control valve to regulate the oil circuit and then enters the hydraulic anchor and the guide angle body respectively. The hydraulic oil passes through the reversing valve to regulate the oil circuit and then enters the hydraulic rotary motor. The reversing valve can make the hydraulic rotary motor rotate clockwise or counterclockwise by switching the working position.

[0016] A further technical solution is a liquid-driven directional side-drilling wellbore tool, which is powered by a battery built into a battery sub. The pressure sensor and electrical signal control board in the battery sub decode and translate the pressure signal released from the wellhead, control the drive motor to drive the hydraulic oil pump and the corresponding oil circuit control valve, so that the hydraulic oil enters the designated components, thereby achieving the anchoring of the entire liquid-driven directional side-drilling wellbore tool, the control of the working position of the guide sub, and the anchoring of the working position of the guide sub.

[0017] A further technical solution is that the hydraulic rotary motor can drive the guide bevel body to rotate 360° clockwise or 360° counterclockwise from the initial position, and the rotation direction is determined by the minor arc between the set working position of the guide bevel body and its initial position. When the subsequent working position of the guide bevel body needs to be adjusted, the rotation direction is determined by the minor arc between the new working position and the working position before adjustment; the bevel angle of the guide bevel body is 6°, and the bevel surface of the guide bevel body is provided with a certain curvature; the working position of the guide bevel short section can be regarded as the working position of the guide bevel body.

[0018] A further technical solution is that a liquid-driven directional side-drilling wellbore tool can cooperate with the side-drilling drill bit to side-drill multiple side-drilling wellbores within a 360° circumferential range of a specified horizontal layer in the oil well. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a liquid-driven directional sidetracking wellbore tool of the present invention;

[0020] Figure 2 It is a schematic diagram of the appearance of a liquid-driven directional sidetracking wellbore tool of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the guide oblique body of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the transmission short section housing of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the oil tank short section of the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the anchoring pup joint of the present invention;

[0025] In the figure: 1. Bevel guide, 1a. Anchor claw groove, 1b. Keyway, 1c. Hydraulic oil chamber, 1d. Oil chamber cover connecting threaded hole, 1e. Slewing bearing inner ring connecting threaded hole, 1f. Motor connecting threaded hole; 2. Bevel guide anchor claw; 3. Spring; 4. Anchor claw pressure strip; 5. Bevel guide oil chamber cover; 6. Slewing bearing; 7. Transmission short section housing, 7a. Slewing bearing outer ring connecting threaded hole, 7b. Seal groove, 7c. Motor seat, 7d. Motor fixing through hole, 7e. Oil block connecting through hole; 8. Hydraulic rotary motor; 9. Oil block; 10. Valve group short section housing; 11. Transmission - valve group short section oil circuit rotating connection block; 12. reversing valve; 13. reversing valve bracket; 14. tool anchoring control valve; 15. guide bevel anchoring control valve; 16. valve group bracket; 17. diverter block; 18. pump bracket; 19. hydraulic pump; 20. drive motor; 21. motor bracket; 22. valve group - oil tank short section oil circuit rotating connection block; 23. oil tank; 24. oil tank cover; 25. piston; 26. anchoring - oil tank short section oil circuit rotating connection block; 27. hydraulic anchor; 28 battery short section housing; 29 electric signal control board; 30 pressure sensor; 31 battery. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] 1. As Figure 1-6 As shown in the figure, a liquid-driven directional side-drilling wellbore tool is characterized in that: the working position of the side-drilling wellbore drilling tool is adjusted by the working position of the guide short section, so the key to directional side-drilling lies in the control of the working position of the guide short section; the liquid-driven directional side-drilling wellbore tool adopts a closed oil circuit inside to control and adjust the working position of the guide short section by hydraulic drive;

[0028] The said guide short section comprises a guide body 1, a guide body anchor claw 2, a spring 3, an anchor claw pressure strip 4, and a guide body oil chamber cover 5. The lower part of the guide body 1 is connected to a slewing bearing 6, and the relative rotation of the guide short section and the transmission short section is realized through the slewing bearing 6.

[0029] The outer circumference of the inclined guide body 1 is evenly provided with 4 anchor claw grooves 1a and 4 key grooves 1b. The anchor claw grooves 1a are used to install the spring 2 and the inclined guide body anchor claws 2. The key grooves 1b are used to install the anchor claw pressure strips 4. The inclined guide body 1 is provided with a hydraulic oil chamber 1c, and the hydraulic oil is used to provide anchoring force for the inclined guide body anchor claws 2. The bottom of the inclined guide body 1 is provided with an oil chamber cover connecting threaded hole 1d, a slewing bearing inner ring connecting threaded hole 1e, and a motor connecting threaded hole 1f, which are respectively connected to the inclined guide body oil chamber cover 5, the slewing bearing 6 inner ring, and the hydraulic rotary motor 8 through mechanical screws;

[0030] The transmission assembly includes a transmission short section housing 7, a hydraulic rotary motor 8, and an oil passage block 9. The upper end of the transmission short section housing 7 is connected to the outer ring of the slewing bearing 6, and the lower part of the transmission short section housing 7 is connected to the valve group short section.

[0031] The transmission short section housing 7 is provided with a slewing bearing outer ring connecting threaded hole 7a, a sealing groove 7b, a motor seat 7c, a motor fixing through hole 7d, and an oil block connecting through hole 7e. The outer ring of the slewing bearing 6 is connected to the top of the transmission short section by means of machine screws through the slewing bearing outer ring connecting threaded hole 7a. The motor seat 7c is used to install the hydraulic rotary motor 8. The hydraulic rotary motor 8 and the transmission short section housing 7 are connected by means of machine screws through the motor fixing through hole 7d. The oil block 9 and the transmission short section housing 7 are connected by means of machine screws through the oil block connecting through hole 7e.

[0032] The valve group nipple comprises a valve group nipple housing 10, a transmission-valve group nipple oil circuit rotating connection block 11, a reversing valve 12, a reversing valve bracket 13, a tool anchoring control valve 14, a guide bevel anchoring control valve 15, a valve group bracket 16, a diverter block 17, a pump bracket 18, a hydraulic pump 19, a drive motor 20, a motor bracket 21, and a valve group-oil tank nipple oil circuit rotating connection block 22;

[0033] The lower end of the valve group short section is connected to the upper end of the oil tank short section, the lower end of the oil tank short section is connected to the upper end of the anchor short section, and the lower end of the anchor short section is connected to the upper end of the battery short section;

[0034] The oil tank sub includes an oil tank 23, an oil tank cover 24, and a piston 25. The piston 25 divides the interior of the oil tank 23 into a hydraulic oil chamber and a compressed gas chamber.

[0035] The anchoring nipple includes an anchoring-tank nipple oil circuit swivel connection block 26 and a hydraulic anchor 27;

[0036] The battery short section includes a battery short section housing 28 , an electric signal control board 29 , a pressure sensor 30 and a battery 31 .

[0037] 2. According to claim 1, a liquid-driven directional side-drilling wellbore tool realizes the anchoring function of the entire tool and the rotation and anchoring function of the guide angle short section through an internal closed oil circuit. The hydraulic oil pump drives the hydraulic oil to enter the oil circuit. The hydraulic oil passes through the tool anchoring control valve 14 and the guide angle body anchoring control valve 15 to regulate the oil circuits and then enters the hydraulic anchor 27 and the guide angle body 1 respectively. The hydraulic oil passes through the reversing valve 12 to regulate the oil circuit and then enters the hydraulic rotary motor 8. The reversing valve 12 can make the hydraulic rotary motor 8 rotate clockwise or counterclockwise by switching the working position.

[0038] 3. According to claim 2, a liquid-driven directional sidetracking wellbore tool, whose power comes from a battery 31 built into a battery short section, a pressure sensor 30 in the battery short section and an electric signal control board 29 decode and translate the pressure signal released from the wellhead, control the drive motor 20 to drive the hydraulic oil pump 19 and the corresponding oil circuit control valve, so that the hydraulic oil enters the designated components, realizes the anchoring of the entire liquid-driven directional sidetracking wellbore tool, and controls and anchors the working position of the guide short section.

[0039] 4. According to claim 2, the hydraulic rotary motor 8 can drive the guide bevel body 1 to rotate 360° clockwise or 360° counterclockwise from the initial position, and the rotation direction is determined by the minor arc between the set working position of the guide bevel body 1 and its initial position. When the working position of the guide bevel body 1 needs to be adjusted subsequently, the rotation direction is determined by the minor arc between the new working position and the working position before adjustment; the bevel angle of the guide bevel body 1 is 6°, and the bevel surface of the guide bevel body 1 is provided with a certain curvature; the working position of the guide bevel short section can be regarded as the working position of the guide bevel body 1.

[0040] 5. According to claim 4, a liquid-driven directional sidetracking wellbore tool can cooperate with a sidetracking drill bit to sidetrack multiple sidetracking wellbores within a 360° circumferential range at a specified horizontal layer in an oil well.

[0041] 6. A method for drilling a wellbore using a liquid-driven directional sidetracking tool, characterized in that it comprises the following steps:

[0042] S1, in the initial state, the guide angle body 1 is located at the initial position, the guide angle body anchor claw 2 is in a retracted state, the liquid-driven directional side drilling wellbore tool is caught by the lowering tool, and when the liquid-driven directional side drilling wellbore tool is lowered to a specified depth, a pressure signal preloaded with anchoring the entire liquid-driven directional side drilling wellbore tool is released from the wellhead into the oil well, and after receiving the pressure signal in the oil well, the pressure sensor 30 begins to identify the pressure signal and converts it into an electrical signal and transmits it to the electrical signal control board 29, the electrical signal control board 29 controls the tool anchoring control valve 14 to open, and the drive motor 20 drives the hydraulic oil pump 19 to deliver hydraulic oil to the hydraulic anchor, thereby completing the anchoring of the entire liquid-driven directional side drilling wellbore tool in the oil well casing;

[0043] S2, after the hydraulic directional sidetracking wellbore tool is completely anchored, the tool anchoring control valve 14 is closed, thereby locking the anchoring oil path of the hydraulic directional sidetracking wellbore tool, so that the hydraulic directional sidetracking wellbore tool remains in the anchored state; the tool is lowered and recovered upward, so that the hydraulic directional sidetracking wellbore tool remains at the designated position in the oil well;

[0044] S3, when the hydraulic driven directional side drilling wellbore tool is working, the working position of the guide body 1 needs to be adjusted, and the pressure signal preloaded with the working position of the guide body 1 is released from the wellhead into the oil well. After receiving the pressure signal in the oil well, the pressure sensor 30 of the hydraulic driven directional side drilling wellbore tool starts to identify the pressure signal, converts it into an electrical signal and transmits it to the electrical signal control board 29. The electrical signal control board 29 controls the reversing valve 12 to open, and the driving motor 20 drives the hydraulic oil pump 19 to deliver the hydraulic oil to the hydraulic rotary motor 8, so that the hydraulic rotary motor 8 drives the guide short section to rotate a specified angle, and then closes the reversing valve 12, closes the rotating oil circuit of the guide short section, and keeps the guide short section in the specified working position;

[0045] After the closing of the rotating oil circuit of the guide short section is completed, the electric signal control board 29 controls the guide body anchoring control valve 15 to open, and the driving motor 20 drives the hydraulic oil pump 19 to deliver the hydraulic oil to the hydraulic oil chamber 1c. The hydraulic oil pushes the guide body anchor claw 2 to extend, and anchors the guide body 1 to the inner wall of the oil well casing, thereby realizing the anchoring of the guide short section working position, so that the guide short section can also maintain its working position under the action of drilling pressure and drilling tool torque;

[0046] S4, after the guide deflector short section is anchored at the working position, the drilling tool is lowered to the liquid-driven directional sidetracking wellbore tool, and the drilling tool starts the sidetracking operation at the set working position under the action of the guide deflector 1;

[0047] S5, when it is necessary to adjust the working position of the deflection guide short section, first recover the drilling tool toward the wellhead to separate it from the liquid-driven directional sidetracking wellbore tool, release the pressure signal in the oil well at the wellhead, and after receiving the pressure signal in the oil well, the pressure sensor 30 of the liquid-driven directional sidetracking wellbore tool begins to identify the pressure signal and converts it into an electrical signal and transmits it to the electrical signal control board 29, the electrical signal control board 29 controls the deflection guide anchor control valve 15 to open, the driving motor 20 drives the hydraulic oil pump 19 to reverse and pump the hydraulic oil from the hydraulic oil chamber 1c to the oil tank 23, the internal pressure of the hydraulic oil chamber 1c decreases, the deflection guide anchor claw 2 is retracted, and the deflection guide 1 is unanchored. After the deflection guide 1 is unanchored, the electrical signal control board 29 controls the deflection guide anchor control valve 15 to close, and keeps the deflection guide anchor claw 2 in the recovered state;

[0048] Then, the electric signal control board 29 controls the reversing valve 12 to open, and the driving motor 20 drives the hydraulic oil pump 19 to deliver the hydraulic oil to the hydraulic rotary motor 8, so that the hydraulic rotary motor 8 drives the guide bevel short section to rotate a specified angle, and then closes the reversing valve 12, closes the rotating oil circuit of the guide bevel short section, and keeps the guide bevel short section at the specified working position;

[0049] After the closing of the rotating oil circuit of the guide short section is completed, the anchoring step of the guide short section working position in S3 is repeated to anchor the guide short section at a new working position, and then the drilling tool is lowered again;

[0050] S6, when the liquid-driven directional side-drilling wellbore tool needs to be recovered, the drilling tool is first recovered to separate it from the oil well, and then the anchoring step of the guide angle body 1 in S5 is repeated. After the guide angle body 1 is unanchored, the salvage spear is lowered;

[0051] S7, after the salvage anchor and the liquid-driven directional sidetracking wellbore tool are anchored, the pressure signal preloaded with the liquid-driven directional sidetracking wellbore tool is released from the wellhead into the oil well. After receiving the pressure signal in the oil well, the pressure sensor 30 of the liquid-driven directional sidetracking wellbore tool begins to identify the pressure signal and converts it into an electrical signal and transmits it to the electrical signal control board 29. The electrical signal control board controls the tool anchoring valve 14 to open, and the driving motor 20 drives the hydraulic oil pump 19 to reverse and transport the hydraulic oil from the oil cavity of the hydraulic anchor 27 to the oil tank 23, and the hydraulic anchor 27 is unanchored. After the hydraulic anchor 27 is unanchored, the electrical signal control board 29 controls the tool anchoring valve 14 to close, so that the liquid-driven directional sidetracking wellbore tool is unanchored in the oil well. After the liquid-driven directional sidetracking wellbore tool is completely unanchored in the oil well, the liquid-driven directional sidetracking wellbore tool is recovered toward the wellhead.

Claims

1. A liquid-driven directional sidetracking wellbore tool, characterized in that: The working position of the side-drilling wellbore drilling tool is adjusted by the working position of the guide short section. Therefore, the key to directional side-drilling is to control the working position of the guide short section. The hydraulic drive directional side-drilling wellbore tool adopts a closed oil circuit to control and adjust the working position of the guide short section through hydraulic drive. The said guide short section comprises a guide body (1), a guide body anchor claw (2), a spring (3), an anchor claw pressure strip (4), and a guide body oil chamber cover (5); the lower part of the guide body (1) is connected to a slewing bearing (6), and the relative rotation of the guide short section and the transmission short section is achieved through the slewing bearing (6); The outer circumference of the said guide body (1) is evenly provided with four anchor claw grooves (1a) and four key grooves (1b). The anchor claw grooves (1a) are used to install the spring (2) and the guide body anchor claw (2), and the key grooves (1b) are used to install the anchor claw pressure strip (4). The guide body (1) is provided with a hydraulic oil chamber (1c) inside, and the hydraulic oil is used to provide an anchoring force for the guide body anchor claw (2). The bottom of the guide body (1) is provided with an oil chamber cover connecting threaded hole (1d), a slewing bearing inner ring connecting threaded hole (1e), and a motor connecting threaded hole (1f), which are respectively connected to the guide body oil chamber cover (5), the slewing bearing (6) inner ring, and the hydraulic rotary motor (8) through mechanical screws; The transmission assembly comprises a transmission short section housing (7), a hydraulic rotary motor (8), and an oil passage block (9); the upper end of the transmission short section housing (7) is connected to the outer ring of the slewing bearing (6), and the lower part of the transmission short section housing (7) is connected to the valve group short section; The transmission short section housing (7) is provided with a slewing bearing outer ring connecting threaded hole (7a), a sealing groove (7b), a motor base (7c), a motor fixing through hole (7d), and an oil block connecting through hole (7e); the outer ring of the slewing bearing (6) is connected to the top of the transmission short section by means of a machine screw through the slewing bearing outer ring connecting threaded hole (7a); the motor base (7c) is used to install a hydraulic rotary motor (8); the hydraulic rotary motor (8) and the transmission short section housing (7) are connected by means of a machine screw through the motor fixing through hole (7d); and the oil block (9) and the transmission short section housing (7) are connected by means of a machine screw through the oil block connecting through hole (7e); The valve group nipple comprises a valve group nipple housing (10), a transmission-valve group nipple oil circuit rotating connection block (11), a reversing valve (12), a reversing valve bracket (13), a tool anchoring control valve (14), a guide bevel anchoring control valve (15), a valve group bracket (16), a flow divider block (17), a pump bracket (18), a hydraulic pump (19), a drive motor (20), a motor bracket (21), and a valve group-oil tank nipple oil circuit rotating connection block (22); The lower end of the valve group short section is connected to the upper end of the oil tank short section, the lower end of the oil tank short section is connected to the upper end of the anchor short section, and the lower end of the anchor short section is connected to the upper end of the battery short section; The oil tank short section comprises an oil tank (23), an oil tank cover (24), and a piston (25), wherein the piston (25) divides the interior of the oil tank (23) into a hydraulic oil chamber and a compressed gas chamber; The anchoring nipple comprises an anchoring-oil tank nipple oil circuit swivel connection block (26) and a hydraulic anchor (27); The battery short section comprises a battery short section housing (28), an electric signal control board (29), a pressure sensor (30) and a battery (31).

2. According to claim 1, a hydraulically driven directional side-drilling wellbore tool realizes the anchoring function of the entire tool and the rotation and anchoring function of the guide angle short section through an internal closed oil circuit. The hydraulic oil pump drives the hydraulic oil to enter the oil circuit. The hydraulic oil passes through the tool anchoring control valve (14) and the guide angle anchoring control valve (15) to regulate the oil circuits and then enters the hydraulic anchor (27) and the guide angle (1) respectively. The hydraulic oil passes through the reversing valve (12) to regulate the oil circuit and then enters the hydraulic rotary motor (8). The reversing valve (12) can make the hydraulic rotary motor (8) rotate clockwise or counterclockwise by switching the working position.

3. According to claim 2, a liquid-driven directional side-drilling wellbore tool, whose power comes from a battery (31) built into a battery short section, a pressure sensor (30) and an electric signal control board (29) in the battery short section decode and translate the pressure signal released from the wellhead, control the drive motor (20) to drive the hydraulic oil pump (19) and the corresponding oil circuit control valve, so that the hydraulic oil enters the designated components, realizes the anchoring of the entire liquid-driven directional side-drilling wellbore tool, and controls the working position of the guide short section and anchors the working position of the guide short section.

4. According to claim 2, the hydraulic rotary motor (8) can drive the guide bevel body (1) to rotate 360° clockwise or 360° counterclockwise from the initial position, and the rotation direction is determined by the minor arc between the set working position of the guide bevel body (1) and its initial position. When the working position of the guide bevel body (1) needs to be adjusted subsequently, the rotation direction is determined by the minor arc between the new working position and the working position before the adjustment; the bevel angle of the guide bevel body (1) is 6°, and the bevel surface of the guide bevel body (1) is provided with a certain curvature; the working position of the guide bevel short section can be regarded as the working position of the guide bevel body (1).

5. According to claim 4, a liquid-driven directional sidetracking wellbore tool can cooperate with a sidetracking drill bit to sidetrack multiple sidetracking wellbores within a 360° circumferential range at a specified horizontal layer in an oil well.

6. A method for drilling a wellbore using a liquid-driven directional sidetracking tool, characterized in that: The following steps are involved: S1, in the initial state, the guide angle body (1) is located at the initial position, the guide angle body anchor claw (2) is in a retracted state, the liquid-driven directional side drilling wellbore tool is caught by the lowering tool, and when the liquid-driven directional side drilling wellbore tool is lowered to a specified depth, a pressure signal preloaded with anchoring the entire liquid-driven directional side drilling wellbore tool is released from the wellhead into the oil well, and after receiving the pressure signal in the oil well, the pressure sensor (30) begins to identify the pressure signal and converts it into an electrical signal and transmits it to the electrical signal control board (29), the electrical signal control board (29) controls the tool anchoring control valve (14) to open, and the drive motor (20) drives the hydraulic oil pump (19) to deliver hydraulic oil to the hydraulic anchor, thereby completing the anchoring of the entire liquid-driven directional side drilling wellbore tool in the oil well casing; S2, after the liquid-driven directional sidetracking wellbore tool is completely anchored, the tool anchoring control valve (14) is closed, thereby locking the anchoring oil path of the liquid-driven directional sidetracking wellbore tool, so that the liquid-driven directional sidetracking wellbore tool remains in an anchored state; the tool is lowered and recovered upward, so that the liquid-driven directional sidetracking wellbore tool remains at a designated position in the oil well; S3, when the hydraulically driven directional side drilling wellbore tool is working, the working position of the guide body (1) is adjusted, and a pressure signal preloaded with the working position of the guide body (1) is released from the wellhead into the oil well. After receiving the pressure signal in the oil well, the pressure sensor (30) of the hydraulically driven directional side drilling wellbore tool begins to identify the pressure signal, converts it into an electrical signal and transmits it to the electrical signal control board (29). The electrical signal control board (29) controls the reversing valve (12) to open, and the driving motor (20) drives the hydraulic oil pump (19) to deliver hydraulic oil to the hydraulic rotary motor (8), so that the hydraulic rotary motor (8) drives the guide short section to rotate to a specified angle, and then closes the reversing valve (12), closes the rotary oil circuit of the guide short section, and keeps the guide short section at the specified working position; After the closing of the rotating oil circuit of the guide short section is completed, the electric signal control board (29) controls the guide anchor control valve (15) to open, and the driving motor (20) drives the hydraulic oil pump (19) to deliver hydraulic oil to the hydraulic oil chamber (1c). The hydraulic oil pushes the guide anchor claw (2) to extend, and anchors the guide (1) to the inner wall of the oil well casing, thereby realizing the anchoring of the guide short section at the working position, so that the guide short section can maintain its working position under the action of drilling pressure and drilling tool torque; S4, after the guide deflector short section is anchored at the working position, the drilling tool is lowered to the liquid-driven directional sidetracking wellbore tool, and the drilling tool starts to perform sidetracking operations at the set working position under the action of the guide deflector (1); S5, when the working position of the deflection guide short section needs to be adjusted, the drilling tool is first recovered toward the wellhead to separate it from the liquid-driven directional side-drilling wellbore tool, and a pressure signal is released into the oil well at the wellhead. After receiving the pressure signal in the oil well, the pressure sensor (30) of the liquid-driven directional side-drilling wellbore tool begins to identify the pressure signal and converts it into an electrical signal and transmits it to the electrical signal control board (29). The electrical signal control board (29) controls the deflection guide anchor control valve (15) to open, and the drive motor (20) drives the hydraulic oil pump (19) to reverse and transport the hydraulic oil from the hydraulic oil chamber (1c) to the oil tank (23). The pressure in the oil chamber of the deflection guide (1) decreases, the deflection guide anchor claw (2) is retracted, and the deflection guide (1) is unanchored. After the deflection guide (1) is unanchored, the electrical signal control board (29) controls the deflection guide anchor control valve (15) to close, and keeps the deflection guide anchor claw (2) in a recovered state; Subsequently, the electric signal control panel (29) controls the reversing valve (12) to open, and the driving motor (20) drives the hydraulic oil pump (19) to deliver hydraulic oil to the hydraulic rotary motor (8), so that the hydraulic rotary motor (8) drives the guide bevel sub to rotate to a specified angle, and then closes the reversing valve (12), closing the rotary oil circuit of the guide bevel sub so that the guide bevel sub remains in the specified working position; After the closing of the rotating oil circuit of the guide short section is completed, the anchoring step of the guide short section working position in S3 is repeated to anchor the guide short section at a new working position, and then the drilling tool is lowered again; S6, when the hydraulically driven directional side drilling wellbore tool needs to be recovered, the drilling tool is first recovered to separate it from the oil well, and then the step of unanchoring the guide angle body (1) mentioned in S5 is repeated. After the guide angle body (1) is unanchored, the salvage spear is lowered; S7, after the salvage anchor and the liquid-driven directional side drilling wellbore tool are anchored, a pressure signal preloaded with the liquid-driven directional side drilling wellbore tool is released from the wellhead into the oil well. After receiving the pressure signal in the oil well, the pressure sensor (30) of the liquid-driven directional side drilling wellbore tool begins to identify the pressure signal and converts it into an electrical signal and transmits it to the electrical signal control board (29). The electrical signal control board controls the tool anchor valve (14) to open, and the drive motor (20) drives the hydraulic oil pump (19) to reverse and transport the hydraulic oil from the oil chamber of the hydraulic anchor (27) to the oil tank (23). The hydraulic anchor (27) is unanchored. After the hydraulic anchor (27) is unanchored, the electrical signal control board (29) controls the tool anchor valve (14) to close, so that the liquid-driven directional side drilling wellbore tool is unanchored in the oil well. After the liquid-driven directional side drilling wellbore tool is completely unanchored in the oil well, the liquid-driven directional side drilling wellbore tool is recovered toward the wellhead.

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